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Caption: Total anthropogenic GHG emissions (GtCO2-eq yr-12 ) 1990-2019: CO2 from fossil fuel combustion and industrial processes (FFI); CO2 from Land use, land use change and forestry (CO2 LULUCF); methane (CH4); nitrous oxide (N2O); fluorinated gases (F-gases). F-gas emissions do not include Montreal gases (CFCs, HCFCs) which reached a peak in the 1990s but have since declined. Panel a: Aggregate GHG emission trends by groups of gases reported in GtCO2-eq converted based on global warming potentials with a 100-year time horizon (GWP-100) from the IPCC Sixth Assessment Report Working Group 1 (REF Chapter 7). Panel b: Waterfall diagrams juxtaposing GHG emissions for the most recent year 2019 in CO2 equivalent units using GWP-100 values from the IPCC’s Sixth, Fifth and Second Assessment Reports, respectively. Error bars show the associated uncertainties at a 90% confidence interval. Panel c: Individual trends in CO2-FFI, CO2-FOLU, CH4 and N2O emissions in (original) mass units 10 (Gt yr-1) for the period 1990–2019, normalised relative to 1 in 1990. Note the different scale for F-gas emissions compared to other gases, highlighting its very rapid growth from a low base.
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Caption: Change in regional GHG emissions and rates of change compatible with warming targets. Panel a: Regional GHG emission trends (in GtCO2-eq yr-1 (GWP100 AR6)) for the time period 1990–2019. GHG emissions from international aviation (AIR) and shipping (SEA) are not assigned to individual countries and shown separately. Panel b: Historical GHG emissions change by country (2010–2019), compared to rates of reduction compatible with 1.5°C and 2°C warming targets, assessed via reduction rates in AR6 IAM scenarios over the period 2020-2040. Individual circles depict countries (scaled by total emissions in 2019) or scenarios, horizontal lines depict the average change by region or scenario category. Panel b excludes CO2 LULUCF due to a lack of consistent national data.
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Caption: Get from SPM
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